baber/WOPTO huggingface dataset:
Patent GB-1226822-A (GB)
IPC: B32B27/00
Filed: 1968-06-11
Abstract: 1,226,822. Glass fibre laminates. MINNESOTA MINING & MFG. CO. 11 June, 1968 [12 June, 1967], No. 27697/68. Heading B5N. [Also in Division C3] Laminates are prepared from glass cloth and a stable, thermosetting blend comprising an epoxy novolac resin (I), a curing agent therefor (II) and a non-volatile, thermally stable, aromatic high temperature stabilizer (III) which has a number average molecular weight of 400 and a hydroxyl equivalent weight of 160- 10,000. A preferred composition comprises 30-75% by wt. of I, 20-65% by wt. of II and 3-30% by wt. of III. II may be a polycarboxylic acid anhydride, e.g. 3,6-endomethylene- 1,2,3,6 - tetrahydro - 3(4) - methylphthalic anhydride. Preferred III are poly(arylene ethers), e.g. a poly(phenylene oxide) containing 35% ortho- and 65% para-phenylene oxide units. The composition may also contain an accelerator, e.g. 2,4,6-tris(dimethylaminomethyl) phenol. In an example an 8-ply laminate was prepared by moulding for 1 hour at 175 C. and 500 p.s.i.
Patent GB-1227481-A (GB)
IPC: D02J1/22
Filed: 1969-05-15
Abstract: 1,227,481. High uniform shrinkage polyester filaments. KURARAY CO. Ltd. 15 May, 1969 [17 May, 1968; 22 May, 1968; 25 May, 1968], No. 24944/69. Heading B5B. [Also in Division D1] A process for the preparation of highly shrinkable polyester filaments having uniform shrinkage at 130‹ to 220‹ C. which comprises drawing an undrawn fibre at a draw ratio of at least 3:1 at 40‹ to 70‹ C., shrinking the drawn filament by 10 to 50% at 65‹ to 130‹ C. and in excess of the first drawing temperature, preferably by at least 2‹ C., followed by a second drawing at 40‹ to 70‹ C. of 10 to 80% of the shrunken length and to not more than 1À2 Î the length after the first drawing. The filament may be heated to 30‹ to 70‹ C. prior to the treatment. The polyester comprises at least 85 mole per cent (and preferably at least 90 mole per cent) ethylene terephthalate units and up to 15 mole per cent of a dicarboxylic acid ester as for example ethylene isophthalate, ethylene adipate and/or up to 15 mole per cent of an alcohol component as for example methoxy polyethylene glycol, pentaerythritol or diethylene glycol. The polyester fibre or filament so obtained may be mix-spun with a non-shrinkable fibre or filament and thereafter woven into a textile fabric. Both yarn and fabric exhibit uniform high shrinkage, resulting in uniform and high bulk yarn and fabric with excellent hand and pilling resistance.
Patent GB-1227718-A (GB)
IPC: F16T1/10
Filed: 1970-02-10
Abstract: 1,227,718. Valves. GESTRA-KSB VERTRIEBS G.m.b.H. & CO. K.G. 10 Feb., 1970 [20 Feb., 1969], No. 6204/70. Heading F2V. [Also in Division F4] Discharge from a steam trap is thermally controlled by a mechanism which is supported by and contained within a tubular dirt filter which is removable from the trap subsequent to the removal of a cover. As iliustrated, a valve member 7 is carried and operated by a bellows assembly 6 which is mounted by means of a collar 11 on the inside of the filter 10. A collar 12 on the filter is held against the lower part of the trap by a dished spring 14 which is held in place by the cover 5 and which is apertured for the flow of medium through the trap. In modifications (not shown), the filter may be held in place by a spring acting between the cover and the upper end of the filter, the filter may be located on the valve seating bush 4, and the bellows assembly may be capable of axial screw adjustment.
Patent GB-1229212-A (GB)
IPC: B04C3/00
Filed: 1967-05-03
Abstract: 1,229,212. Centrifugal separators. ABERDEEN ENG. DESIGN Ltd. 30 April, 1968 [3 May, 1967], No. 20435/67. Heading B2P. An apparatus for separating particulate material from a mixture of particulate material and a fluid comprises a fluid-guide member extending between an inlet for the mixture and an outlet for clean fluid, and flow-directing means at or adjacent the inlet and adapted to direct a flow of mixture helically around the guide member and towards the outlet. In the apparatus shown in Fig. 1, the guide member consists of a tube 11 which carries frusto-conical nozzles 17 at its ends and is surrounded by a casing 10. Pipes 18 offset from, and at an angle to, the longitudinal axis of the apparatus communicate with the interior of the nozzles. An outlet for separated particulate material is provided by a tube 20 having an internal partition 21 which projects into the casing 10. The mixture to be separated is introduced through the lower pipe 18 and due to the offset position of the latter is imparted a rotational motion around the tube 11 in the lower nozzle 17. On leaving the nozzle the mixture moves helically through the casing, the fluid being guided by the tube 11 towards the upper nozzle 17 whilst the particulate material is separated by centrifugal force against the wall of the casing 10. Part of the fluid is recirculated through the casing and the separated material is removed through the tube 20 with a portion of the recirculated fluid, the partition 21 inducing a flow of fluid through the tube to assist removal. The flow of clean fluid discharging- through the upper nozzle 17 and pipe 18 has its direction changed from helical to straight. In a modification shown in Fig. 3, a sleeve 22 is arranged between the casing 10A and the tube 11A and serves to re-circulate part of the fluid and material through the annular space between the sleeve and the casing. The apparatus may be vertical or inclined. The mixture may be fed at the upper or lower end of the apparatus, the particulate material in both cases being removed from the lower end of the casing 10A. In a further modification, the outlet tube 20, 20A may be dispensed with, particulate material being removed through a detachable closure member at the lower end of the casing. Vanes may be used in an alternative inlet assembly to impart the helical movement to the mixture and the outlet assembly may differ from the inlet assembly. A number of separators may be mounted in parallel and a number of guide members may be arranged in parallel in the same casing. The apparatus may be used to separate dust from air, particulate chemicals from gases, metal particles from a lubricant or liquid coolant, or relatively heavy particulate material from relatively light particulate material and fluid.
Patent GB-1229583-A (GB)
IPC: B60V3/04
Filed: 1967-04-28
Abstract: 1,229,583. Air cushion vehicles; railway systems. HOVERCRAFT DEVELOPMENT Ltd. 19 April, 1968 [28 April, 1967], No. 19662/67. Headings B7K and B7L. [Also in Division B8] An air cushion vehicle 1 for operating over a fixed track 2 of rectangular cross-section comprises body structure having formed integrally therewith longitudinally-extending members 34 and 44 respectively formed with flanges 35, 45 arranged parallel in spaced relationship with matching flanges 32 and 42 on cushion pads 30, 40 respectively. The pads are apertured at 33, 43 so that air delivered by a fan to a chamber 7 within the body is discharged through apertures 33, 43 to form air curtains which generate and contain supporting and guiding cushions between the track 2 and pads 30 and 40 respectively. To provide a suspension capable of absorbing deflections imposed on the vehicle by irregularities in the track surfaces or external effects such as wind loading each pad 30, 40 is attached to adjacent structure by flexible U- section membranes 39, 49, free movement being damped by the effect of pressure air within chamber 7 acting within the concavities of the membranes.
Patent GB-1232772-A (GB)
IPC: H04M11/04
Filed: 1969-01-03
Abstract: 1,232,772. Automatic exchange systems. SHORROCK DEVELOPMENTS Ltd, 10 Dec. 1969 [3 Jan., 1969], No. 648/69. Heading H4K. In a remote burglar alarm system which is automatically connectible via a telephone line to a police station so as to transmit a prerecorded message thereto, the condition of the line is continuously monitored so that in the event that it is cut or short circuited or is carrying ringing current in respect of an incoming call a local alarm is immediately actuated instead of as usual being actuated after an e.g. 5 minute delay during which surprise police action can be taken. The continuity of the line is monitored by means of capacitor C1 which, provided it is maintained charged by a trickle current derived from the exchange battery via the continuous line, high resistances R2, R3 and line-polarity compensating bridge BR1, holds FET, TR1 non-conductive. If the line is cut or a lowimpedance loop is made, TR1 becomes conductive and discharges capacitor C1. The presence of ringing current on the line is detected by bridge BR2 whose output charges C2 so as to prepare an operating circuit for transistor TR2. The capacitor rapidly discharges via TR2 and R4 when ringing ceases so as not to impede the preferred operation of the alarm. In response to operation of a burglar detecting arrangement (not shown) battery is applied to terminals 1, 2 whereupon relay A comes up so as to connect an automatic dialler and alarm message generator to line over terminals 3, 4. This occurs whether or not the line is in a condition for making a call thus providing a fail-safe mode for the line monitoring circuit. However, if C1 is discharged due to a line fault or if C2 is charged due to incoming ringing, relay B comes up (in series with C1 or TR2 respectively and holds over its own contact B1 and also, via its contact B2, initiates a local alarm.
Patent GB-1234541-A (GB)
IPC: G01S1/40
Filed: 1969-02-05
Abstract: 1,234,541. Radio navigation. STANDARD TELEPHONES & CABLES Ltd. 29 Jan., 1970 [5 Feb., 1969; 13 March, 1969], Nos. 6157/69 and 13250/69. Heading H4D. In a radio navigation beacon radio-frequency (R.F.) is commutated to each aerial of a linear array of equi-spaced aerials to produce bidirectional constant-velocity scanning, a further aerial radiates R.F. of a frequency differing from the commutated R.F. by a fixed amount, and the sign of the frequency difference is changed at each half period of commutation. The frequency difference may be an integral multiple of the commutation rate. Either the commutated R.F. or the further aerial R.F. may be constant; or the commutated R.F. and the further aerial R.F. are interchanged at each half period of commutation. The phase of the commutated R.F. may be changed between each successive bi-directional scan, successive phase changes being equal and in the same direction. The period of radiation from the aerial at one end of the array may be different from the equal periods from the remaining aerials. The invention avoids the production of large R.F. transients. The beacon may be utilized for azimuth or glide path guidance. Beacon details, Fig. 2.-The output of R.F. source 21 is applied to a generator 22 as described in Specification 1,187,760 (Division H1) to produce upper and lower sideband outputs one of which is fed to aerial 29 and the other to a distributer 31 for switching to aerial array 34 to cause the bi-directional scanning. Generator 22 and distributer 31 are operated such that during each upward aerial commutation the generator rotates in one direction and reverses during each downward sweep. The beat frequency between the two radiations at a mobile receiver undergoes a unidirectional Doppler frequency shift. Switching is effected by frequency dividers and counters. To produce accurate digital glide angle indication at the receiver by an " add one count ". Receiver.-After amplitude detection (50, Fig. 3, not shown) a band-pass filter (51) provides for rejection of the ground-reflected signal, the output of the filter after amplitude limitation is applied to a digital counter (53) or is applied to a differential detector arrangement (54) to cause a meter to indicate sense and magnitude of departure from a glide angle preset by a potentiometer (56); a flag-warning system may be added to denote inadequate signal strength.
Patent GB-1238136-A (GB)
IPC: B22C15/24
Filed: 1970-01-15
Abstract: 1,238,136. Blow nozzles. G. PERRY & SONS Ltd. 15 Jan., 1970, No. 2017/70. Heading B2F. [Also in Division B3] A blow nozzle for a foundry sand blowing machine has a housing 7 for an O-ring between the aperture 5 and the periphery of a face 6 which, in use, contacts a core box. The inner wall of the housing is preferably undercut. The nozzle may be made of steel and may be secured to a plate by cooperating screw threads on the nozzle and plate by means of bolts passing through the apertures 9, or by means of screws the heads of which overlap a recessed ledge on the nozzle.
Patent GB-1257117-A (GB)
IPC: G02C9/04
Filed: 1969-12-17
Abstract: 1,257,117. Clamps. A. SINHA. 17 Dec., 1969, No. 61454/69. Heading E2B. [Also in Division G2] A mirror attachment has a frame 3 holding a concave mirror 1 with a central hole 2, connected to a securing arm 7 and clip through two universal joints 5, 8 and an intermediate arm 6. The universal joint 5 is attached to the frame 3 via an arm 4 and an eyebolt 9 is provided for locking the joints in position. The clip is suitable for attaching to spectacle frames.
Patent GB-1257845-A (GB)
IPC: F21K5/12
Filed: 1969-10-13
Abstract: 1,257,845 Photo-flash units. J. V. POWESKA and J. R. STONEHAM. Oct.13, 1969 [Oct.11, 1968], No.50223/69. Heading G2A. A photo-flash unit, having a plurality of percussion-ignitable flash-lamps 3 and individual reflectors 4 therefor, e.g. a flash-cube, has, associated with each lamp, a striker 12 for delivering a percussive blow to the lamp primer 9 when activated by a member outside the unit, e.g. a member 72 forming part of a camera on which the unit is mounted. As shown, a torsion spring 11 is provided for each adjacent pair of lamps, the spring being in the form of an inverted U, the legs of which are cranked so as to form two strikers 12, which are thus urged towards the primers 9. Stops 14 are provided in the paths of the strikers, upward movement of the member 72 through an aperture 15 in the unit base causing the striker 12 engaged thereby to ride up over the associated stop 14. The upper portion of each spring 11 is either mounted in a hollow sleeve 13 or is secured by a clamp, Fig.1b (not shown). In another embodiment, Fig.3 3 (not shown) four springs each in the form of an inverted U are provided. Four cantilever torsion springs are provided in a third embodiment, Fig.2 (not shown).
Patent GB-1258739-A (GB)
IPC: G02F1/135
Filed: 1970-07-01
Abstract: 1,258,739. Pictorial communication. THOMSON-C.S.F. 1 July, 1970 [2 July, 1969], No. 32026/70. Heading H4F. [Also in Division G4] The invention relates to an optical data storage system. A data store has a first layer formed from a mixture of nematic liquid crystal and of a dichroic substance and a second, adjacent, layer of photoconductive material, the two layers being held between transparent electrodes. The first layer has one or more absorption lines if its molecules are aligned to the direction of polarization of incident light and which disappear if the molecules are perpendicular to the light polarization. Light polarized parallel to the alignment of the molecules and to the electrode plane is incident on one of the electrodes and has a frequency corresponding to an absorption line. Data to be stored is projected on to the other electrode. A voltage is supplied to the electrodes such that where the photoconductive material is rendered conductive by the light the voltage across the first layer re-aligns the molecules so that light from source 16 is no longer absorbed. This light then maintains the photoconductive material conductive when the projected data is removed. A heater may be provided to maintain the layers at a desired temperature. The store may hold digital data or may store the display from a cathode-ray tube. The first layer may comprise p-n butoxybenzoic acid and methyl red. An insulating layer may be provided between the electrodes and first layer.  Data is erased by removing the voltage or extinguishing source 16.
Patent GB-1259287-A (GB)
IPC: D21F1/12
Filed: 1968-12-23
Abstract: 1,259,287. Seaming non-metallic sheet material. LINDSAY WIRE WEAVING CO. 23 Dec., 1968 [22 Dec., 1967], No. 61139/68. Heading B5K. A seam is formed between portions A, B of a fabric having a plurality of polymeric warp filaments 1 ... 11 interwoven with a plurality of weft filaments 20 ... 25, 31 ... 38, by (a) cutting the warp filaments 2A, 4A, 6A, 8A, 10A of the portion A to produce a pattern of warp picks having ends disposed along two spaced parallel lines transverse to the general direction of the warp filaments, (b) cutting the warp filaments 1B, 3B, 5B, 7B, 9B, 11B of the portion B to produce a pattern of warp picks complementary to the pattern formed in the portion A, (c) removing the weft filaments of each portion A, B in their end sections between the cut and the respective end of the portion, (d) laying a polymeric replacement weft filament 26 across the end section of the portion A in spaced relation to the nearest remaining weft filament 25, (c) moving the portions A, B together into interleaved relationship so that the ends of the warp filaments 2B, 4B, 6B, 8B, 10B of the portion B are positioned over and in contact with the filament 26 and in abutting relationship with the ends of the warp filaments 2A, 4A, 6A, 8A, 10A of the portion A, (f) progressively weaving one or more additional replacement weft filaments across the interleaved warp filaments of the end sections, and (g) connecting abutting ends of respective warp filaments of the portions A, B. The connection of the abutting ends of the warp filaments may be effected by an adhesive applied by a hypodermic syringe needle. After curing and cooling of the joints, the entire seam area is saturated with the adhesive and excess adhesive which fills the mesh is blown off by compressed air. Prior to the application of the adhesive, the warp picks may be roughened by blasting with micron-sized silicon carbon particles or may be treated by an electrical corona discharge. Preferably, the warp filaments and the replacement weft filaments are formed of a polyester resin, e.g. polyethylene terephthalate, the weft filaments may also be of a polyester resin or may be of metal. Specified adhesives for polyester filaments are polyester resin cured with a free radical catalyst, phenoxy resin cured with free isocyanate prepolymers, and vinyl acetate maleic acid ethylene terpolymer cured with urea formaldehyde. The fabric may form a Fourdrinier belt.
Patent GB-1264784-A (GB)
IPC: E01D21/06
Filed: 1968-02-20
Abstract: 1,264,784. Structural joints, bridges. THOS. STOREY (ENGS.) Ltd. 20 Feb., 1969 [20 Feb., 1968], No. 8249/68. Headings E1G and E1K. [Also in Division F2] A metal bridge structure comprises structural members 2 each formed at each end with a pair of spigots 4, and junction boxes 8 each formed with a pair of sockets 6 receiving a pair of spigots. The spigots are secured by bolts through holes 10, 12. The bolts comprise a split sleeve (16, Fig. 4, not shown) which is expanded by a tapered pin (20). The structure may have a Bailey nose section attached to it by a connector (52, Fig. 3, not shown) with spigots and socket joints.
Patent GB-1265653-A (GB)
IPC: F04B49/08
Filed: 1968-05-01
Abstract: 1,265,653. Fluid-pressure servomotor Systems. JOSEPH LUCAS (INDUSTRIES) Ltd. July 28, 1969 [May 1, 1968], No.20592/68. Heading G3P. A reversible swash-plate pump is controlled manually by link 32 which rocks two-part lever 27, 30 about pivot 28 whereby pin 26 shifts a rod 17 connected to a pilot spool (16) having follow-up control over piston (15) controlling swash-plate (14). Piston 33 responds at 33a to excess delivery pressure and acts against springs 35, 36 via arm 38 or 40, according to the flow direction, and abutments 25 to shift the rod 17 in a sense to limit the pump horse-power. During this over-riding control by piston 33, lever 27, 30 breaks against the action of spring 31, the breakage being permitted by complementary male and female curved engagement between lugs on part 27 and the ends of the arms of part 30. A piston 42 responding to the output pressure of a second pump driven by the same prime mover can assist piston 33 to avoid overloading the prime motor.
Patent GB-1266349-A (GB)
IPC: E04G11/46
Filed: 1969-01-15
Abstract: 1,266,349. Floor shuttering. KAISER FLOORS Ltd. 25 Nov., 1969 [15 Jan., 1969; 10 April, 1969; 30 July, 1969], Nos. 2369/69, 18405/69 and 38188/69. Heading E1S. Synthetic plastics channel-sectioned moulds for producing ribbed concrete floors have detachable transverse stiffening means and can be removed from the floor by bending in the side walls after removal of the stiffeners. The stiffeners may each be an angle-section metal member 18, Fig. 1, attached via pins 19 to stiffening ribs 17 on the mould, or may each comprise a transverse plate 120, Fig. 2, with peripheral apertures 124 for attachment to channel-sectioned stiffening ribs 118. Such a plate may also form a closure member for one end of the mould. Alternatively closure members, e.g. 25, may be spigoted on to the ends of the mould. Several moulds may be arranged end-to-end by overlapping, one end 15 of each mould being of smaller cross-section. A single side rib 21, Fig. 1, or several such ribs, arranged one above the other, or a number of lugs 130, Fig. 2, are provided to support the mould on the floor supporting framework.
Patent GB-1289104-A (GB)
IPC: H01J31/49
Filed: 1968-11-29
Abstract: 1289104 Television EMI Ltd 21 Nov 1969 [29 Nov 1968] 56699/68 Heading H4F [Also in Division H1] An infra-red image pick-up tube comprises a crystal of pyro-electric material having a first surface normal to the long axis thereof exposed to the image through a window which passes the infra-red radiation but preferably intercepts visible light, the other surface of the crystal being scanned by an electron beam. The crystal may be of triglycine sulphate orlithium sulphate, and may be provided with a signal plate on the first surface. In one mode of operation the target is exposed to the infra-red radiation, and is then scanned with a low velocity beam; the radiation is interrupted and the target consequently cools, its surface potential falls, and the potential is restored by scanning with a high velocity beam from the same or a different gun. The use of a high velocity beam may be avoided by introducing an ohmic leak between the scanned surface and the signal plate which is held at a positive potential. In another mode of operation the target is held at a negative potential so that the beam does not impinge on it but induces a current in the signal plate in accordance with the surface charge produced by the radiation at each point. A further arrangement uses a spherical target adjacent which is disposed a mesh having a pitch greater than its distance from the target; both electrodes are negative and act as an electron mirror whose focal length at any point depends on the charge on the target surface produced by the radiation. An incident beam is reflected accordingly to an aperture at the focal point of the mirror, and the transmitted electrons may be focused on to a storage target or on to a fluorescent screen; alternatively either the transmitted or the intercepted electrons may be used to provide an output signal. Television systems.-One mode of operation of the tubes described above comprises televising one complete picture only and reproducing it on a direct view storage tube after which only changes in picture content are transmitted, a complete picture being transmitted from time to time as a refresher. In another mode two storage tubes are used alternately, the read-out from one being combined with the new transient information to provide the input to the other. In a further arrangement the input infra-red radiation is chopped so that black-out follows a few lines behind the low velocity scanning beam; thus the first positive charge image read out by the low velocity beam will reappear as a negative charge image during the dark cycle. This is then read with a high velocity beam to provide a second output of reversed polarity.